Raven Lining Systems
13105 E. 61st Street
Broken Arrow, OK 74012
Location: Cedar Park, Texas (245 Quicksilver Dr.)
Owner: City of Cedar Park
Original Contractor: Lewis Concrete Restoration (formerly F&L Concrete)
Estimated Project Date: 2004
Age of Project: 11 years
Inspection Date: September 17th 2015
Type of Structure(s):
This study was completed on a single 4’ diameter manhole measuring a depth of 4’ 5”. It was precast without resurfacing material located on a neighborhood street with very little flow.
Condition of Structure(s):
The manhole was coated in 2004 with Raven 405 with an average of 125 mils. There were no visual defects or active leaks in the coating.
Structure Results: This manhole was located at 245 Quicksilver Dr. Cedar Park, TX, centered in the road. This manhole had three 20mm dollies glued to the coating and cored.
The resulting pulls were:
- 573psi (100% substrate failure)
- 500psi (100% substrate failure)
- 665psi (90% substrate failure, 10% cohesive failure)